A ball rolls horizontally off a 45-m high cliff with vo10, Ask an Expert

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A ball rolls horizontally off a 45-m high cliff with vo=10 m/s. How far from the base of the cliff will it hit the ground? The tires of a car make 100 revs as the car slows from 30 m/s to 15 m/s. Rtire=0.4 m.

A. What is the angular acceleration of the tires?

B. How much more time is needed to stop the car?

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